I'm 10 days late and I'm on the pill, I usually have my period within the 7 day break but this time I didn't. I took a test Tuesday (31-05-16) and it came back negative so I just went back on my pill the day after. I've still not had a period and I'm wondering whether to take another test to be sure. I also keep feeling very ill and my bowel movement is very irregular (TMI??) but anyway, I'd really appreciate any help or advise. I took another today (04-06-16) and again it is negative. But my period still did not come, could this be normal?